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South Africa, gold production

It may indeed sound romantic, but it is a fact that both in 1970 and 1971 at least 500 tons of gold—that is to say half of all South Africa s production, or 40 percent of total gold production in the non-communist world—passed through unofficial channels on the way to its ultimate destination."... [Pg.94]

Gold, Aurum in Latin, is the only metal except copper that is markedly colored. It is abundant in low concentrations almost all over the earth s crust, in seawater, above all in metallic form and also as goldtellurid. Gold is found as grains in the bottom of rivers in California, Australia, Alaska, and Russia, Chemical Properties while in South Africa gold ore is won from mines with auriferous leaders. Gold is also won as a by-product from the production of copper, nickel, and lead. The world s yearly production of gold is looo tons, of which 150 tons are used in the electronics industry. [Pg.544]

Total annual production of new gold is now about 2300 tonnes of which (1993) 27% comes from South Africa, 15% from the USA and 11% each from Australia and the former Soviet Union. The bulk of the gold from Western countries passes through the London Bullion Market which was established in 1666. Prices, which are quoted in troy oz, are affected by speculative buying and can be subject to astonishing fluctuations. [Pg.1176]

As Britain is relatively poor in mineral deposits, this type of mining is less important here than in other countries of the world. The gold mines in South Africa, metal mines in the U.S.A., Canada and Sweden all use considerable amounts of explosive. In such mines the methods of working are often appreciably different from those described above and adapted to very large-scale production. [Pg.146]

Platinum is the 75th most abundant element and, unlike many elements, is found in its pure elemental form in nature, as are deposits of silver and gold. Platinum is widely distributed over the Earth and is mined mainly in the Ural Mountains in Russia and in South Africa, Alaska, the western United States, Columbia in South America, and Ontario in Canada. When found in the mineral sperryhte (PtAs ), it is dissolved with aqua regia to form a precipitate called sponge that is then converted into platinum metal. It is also recovered as a by-product of nickel mining, mainly in Ontario, Canada. [Pg.163]

At Sasol the bulk of the CH, is either sold as fuel gas or is reformed to synthesis gas (se5 Figure 1). A portion is, however, sold as raw material for the production of NaCN and Ca(CN)2 which are used to extract gold from the milled ore. (Gold mining is a major industry in South Africa). In the Shawinigan process CH. and NH are passed through an electric arc and the HCN which is formed is absorbed by either NaOH or Ca(0H)2 solutions. [Pg.28]

Insoluble impurities fall to the floor of the cell as anode slime. Despite the derogatory name, this material contains precious metals such as gold, silver, and platinum. Anode slime from the electrorefining of nickel11 at Sudbury, Ontario, is a significant source of platinum and palladium as byproducts ( 0.34 g Pt and 0.36 g Pd per metric ton of ore), whereas deposits in the Bushveld complex (Transvaal, South Africa) are so rich in platinum-group metals (Ru, Os, Rh, Ir, Pd, Pt) that the associated Co, Ni, and Cu recovered are considered to be by-products of the lucrative platinum production (4.78 g Pt and 2.03 g Pd per metric ton of ore).7... [Pg.370]


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See also in sourсe #XX -- [ Pg.3 ]




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